fix(TASK-028): pin global-template exclusion, tighten timeout boundary test, reword stale hint

src/config/agent.rs

@@ -1341,6 +1341,7 @@ variables:
         assert_eq!(config.max_concurrent_agents, 4);
         assert_eq!(config.max_agent_depth, 3);
         assert_eq!(config.max_auto_continues, 10);
+        assert_eq!(config.escalation_timeout, 0);
         assert!(config.mcp_servers.is_empty());
         assert!(config.global_tools.is_empty());
         assert!(config.conversation_starters.is_empty());

src/config/mod.rs

@@ -1383,6 +1383,12 @@ clients:
         assert_eq!(cfg.clients.len(), 1);
     }
 
+    #[test]
+    fn config_template_does_not_carry_the_per_agent_escalation_timeout_key() {
+        // `escalation_timeout` is a per-agent setting; the global template must never grow it.
+        assert!(!CONFIG_TEMPLATE.contains("escalation_timeout"));
+    }
+
     #[test]
     fn config_enabled_macros_empty_string_is_some_empty() {
         let cfg: Config = serde_yaml::from_str("enabled_macros: \"\"").unwrap();